All eyes were on Shawn Johnson on this week's "Dancing with the Stars: All-Stars" and the Olympic gold medalist was the epitome of grace under pressure.Taking the dance floor with Mark Ballas (who was previously partnered with Bristol Palin) in place of injured partner Derek Hough, Johnson's tango-paso fusion scored the night's first perfect score."That was a beauty," raved judge Carrie Ann Inaba. "So seamlessly intertwined, fantastic!"Len Goodman declared Johnson and Ballas' dance a "firecracker," while Bruno Tonioli called Johnson the "Queen of the night" and praised the performance for "flawless fusion" and "maximum purity of each dance."Obviously, the scores were 10s across the board.What did you think of Johnson and Ballas? Are they a perfect match?...